IceCap Battery Back-up Version 3.0 The IceCap Battery Back-up Version 3.0 is a backup power solution for compatible DC aquarium pumps, helping maintain water movement during a power outage. It automatically supplies battery power when mains power is lost, making it useful for reef tanks, marine aquariums, and freshwater systems where circulation and oxygen exchange are critical during interruptions. IceCap Battery Backup v3.0 Overview This updated IceCap battery backup is designed to run compatible variable-speed DC pumps during an outage. It can power one compatible pump, run two compatible pumps with reduced run time, or be linked with a second battery backup to extend run time. The compact case can be mounted near an aquarium stand or equipment area, keeping emergency flow support ready without relying on a full generator or large external backup system. Battery Back-up Version 3.0 Features Automatically turns on after a power failure to keep compatible pumps running. Supports one compatible DC flow pump for extended backup operation. Can run two compatible pumps from one battery backup with reduced run time. Two battery backups can be connected together to extend backup time for a single compatible pump. Compact form factor can be mounted on a wall, stand, or equipment cabinet area. Includes power supply, pump adapters, and user guide so the unit can be set up with compatible equipment. Compatible with many 12-24V or lower variable-speed DC pumps, depending on pump model and adapter requirements. Useful for maintaining water movement, surface agitation, and oxygen exchange during power interruptions. IceCap Battery Back-up Version 3.0 Specifications Product type: Aquarium pump battery backup UPC: 851220007221 Part number: IC-BTBK3 J&L SKU: IC-BTBK Capacity: 2.5Ah DC charger input: 100V to 240V 50/60Hz DC charger output: 27V 600mA Main unit DC output: 12V x 2.5A max Main unit DC input: 27V 1A max Fuse: 250V 10A 5 x 20 mm fast blow Dimensions: 5.75" W x 5" L x 3.125" H Weight: 3.85 lb Warranty: 1 year limited manufacturer warranty IceCap Battery Backup Compatibility Notes The IceCap Battery Back-up Version 3.0 is intended for compatible DC aquarium pumps, not heaters, lights, AC pumps, or general household devices. CoralVue lists compatibility with many 24V or lower variable-speed DC pumps, including Maxspect Gyre pumps, IceCap Gyre pumps, and select Reef Octopus Octo Pulse models. CoralVue also notes it is not compatible with Reef Octopus VarioS pumps, EcoTech pumps, Tunze, Jebao, or AI Nero pumps. Always confirm compatibility before connecting equipment. Setting Up the IceCap Battery Back-up Version 3.0 Mount the battery backup in a dry, ventilated location near the aquarium equipment area. Connect the battery charger and the compatible pump using the supplied installation cables and the correct adapter configuration. Test the system after installation so the pump continues running when mains power is removed. Keep the unit away from splashes, salt creep, and high heat, and check cables periodically during routine aquarium maintenance. What's Included 1 x IceCap Battery Backup 1 x Battery Charger Installation Cables